GROTON, Conn. General Dynamics Electric Boat will continue development of the Common Missile Compartment for the Ohio replacement submarine and the UK’s Successor ballistic-missile submarine with an $83.8 million contract modification from the U.S. Navy.

The contract modification will provide funding for 17 tactical missile tubes – 12 for the UK Successor ballistic-missile submarine; four for the Ohio replacement submarine; and one for the Strategic Weapons System - Ashore test facility. It is expected that 241 missile tubes will be manufactured over the life of the program.

This U.S. Navy five-year, $1.85 billion contract was initially awarded to General Dynamics Electric Boat in December 2012 to perform research and development (R&D) work for the Navy’s next-generation ballistic-missile submarine. Construction is scheduled to begin in 2021, and the potential value of the overall contract is $2.3 billion.